AnsweredAssumed Answered

Slopes all close to 90 degrees

Question asked by embarcadero2 on Jul 6, 2010
Latest reply on Jul 6, 2010 by Dan_Patterson
I'm trying to calculate slopes in a state forest starting with 1/3 NED files from the Seamless site. I can see the NED files and they check out.  My use of ArcGIS slope features using spatial analysis from the spatial analysis toolbar and tool box slope features result in non-descript errors. So does 3D slope from the toolbox.  My use of the raster calculator from the spatial analysis toolbar has returned close to the the same value in any direction - every 30m steps I take results in a 90 deg drop!  Some slopes!!  I believe I need to transform the range of slopes returned by using the z-factor in some way.

Can you help?

Stan

Outcomes